Arata, once and for all, tries to make the dense-as-can-be Kazuomi realize what he has in his hands.
I've never had to take one myself.
.لم أُعِد واحدًا من قبل، لذا لا أعرف
Selbst musste ich das nie.
Mais j’en sais rien,
j’ai jamais échoué.
A me non è mai successo,
quindi non sono sicuro.
Eu nunca tive que 
fazer, então não sei.
Лично я никогда с таким не сталкивался.